Which of the following is one of the main differences between descent groups and nuclear families?
A. Descent groups are typically not involved with politics, whereas nuclear families are.
B. Nuclear families are always exogamous, whereas descent groups are always endogamous.
C. Descent groups are permanent, whereas nuclear families are not.
D. Members of descent groups are called affines, whereas members of nuclear families are called
consanguines.
E. Nuclear families are found only in industrial societies, whereas descent groups are found only in foraging societies.

C. Descent groups are permanent, whereas nuclear families are not.

Explanation:

One of the main differences between descent groups and nuclear families is that descent groups are permanent, whereas nuclear families are not.

A descent groups refer to as the kin groups who are single decendants of a common ancestor while nuclear family are refer to a family group which consists of two parents and their children.

trade regulation is a field of law, often bracketed with antitrust (as in the phrase “antitrust and trade regulation law”), including government regulation of unfair methods of competition and unfair or deceptive business acts or practices. antitrust law is often considered a subset of trade regulation law. franchise and distribution law, consumer protection law, and advertising law are sometimes considered parts of trade regulation law.

in general the theory of economics says that the more open to trade a country is the better   the result for the same country and the whole economies.

in real life countries impose taxes, quotas, etc which is not so good for the economies.

this kind of commercial war between the usa and china is slowing down the growth of the whole world so we can say that it is a draw back of trade regulations. and the free trade agreements are benefits of trade regulations.